Of the 8.7 million images removed, 99% were taken down before any Facebook user had reported them, the social media giant said in the report.
Facebook was heavily criticized in 2017 by the chairman of the House of Commons media committee, Damian Collins, over the prevalence of child sexual abuse material on its platform.
In 2016, the BBC found evidence that pedophiles were sharing obscene images of children via secret Facebook groups.
Facebook shares retreated 2.38% to $150.72 by midsession on Wednesday.
READ: Cannabis short-sellers picked up more than $450M in gains on two-day price weakness, says S3 Partners
Those words are being automatically filtered out to prevent staff from seeing them. References to sex acts are no longer allowed in workplace documents and short URLs, the report said.
One worker was quoted in the report as saying: "...it's sensible for people not to swear unnecessarily at each other, but going through and proactively removing obscure links that nobody has ever complained about feels pretty misguided."
Google shares lost 1.13% to $1,091.19.
The US National Institutes of Health announced the addition of Amazon.com Inc's (NASDAQ:AMZN) Amazon Web Services to its Science and Technology Research Infrastructure for Discovery, Experimentation, and Sustainability (STRIDES) Initiative, a report by Forbes said.
The partnership is expected to speed up discoveries in biomedical research, according to Teresa Carlson, vice president of Worldwide Public Sector at AWS.
“We’re committed to providing those researchers participating in the STRIDES Initiative with access to high-value NIH datasets, enabling them to further their research to study, treat and prevent the most devastating diseases,” she said in the report.
Amazon Web Services is a subsidiary of Amazon.com that provides on-demand cloud computing platforms-on a paid subscription basis-to governments, companies and individuals. The service allows subscribers to have access to a virtual cluster of computers, available all the time, through the Internet.
Amazon stock dropped 1.6% to $1,740.20.
"They borrow money, they make more movies and more original content, they get more subscribers, and then they go to the market to try to push up the market price and then use that to borrow more money," New York University professor Aswath Damodaran said.
"It's not as if they can slow down the production of content once their subscribers hit the cap, because they're training those subscribers almost to expect 20, 25 new shows every year. That's not sustainable," he added.
Shares of Netflix fell 4.33% to $318.73.
Rival Samsung was also slapped with a fine of five million euros ($5.7 million). Apple was hit with an additional five million euro fine for failing to give clients clear information about how to maintain or eventually replace handset batteries.
The anti-trust body said in a statement that some Apple and Samsung firmware updates “had caused serious dysfunctions and reduced performance significantly, thereby accelerating the process of replacing them”.
Apple shares were easier by 0.6% to $221.40.
Reporting by Rene Pastor, contactable on [email protected]